IEC 60903:2014

Overview

IEC 60903:2014 is the definitive international standard for electrical insulating gloves and mitts intended for live working environments. Developed by the International Electrotechnical Commission (IEC), this standard specifies the requirements, classification system, and testing protocols necessary to ensure that electrical insulating gloves provide effective protection for workers against electric shock. It also covers "composite gloves," which offer integrated mechanical protection alongside electrical insulation.

This third edition reflects significant updates, including clarified requirements for long gloves, new special properties such as resistance to leakage current, and improvements in defect classification, thus supporting the latest industry practices and technological advancements.

Key Topics

• Scope and Purpose IEC 60903:2014 applies to gloves and mitts made of elastomer, designed to protect workers from electrical shock during live working conditions. It addresses both standard insulating gloves (typically used with leather protectors) and composite gloves with built-in mechanical resistance.

• Classification System Gloves are classified by:

  • Class: Ranging from 00 to 4, indicating the level of electrical protection.
  • Special Properties:
    • Category A: Acid resistance
    • Category H: Oil resistance
    • Category Z: Ozone resistance
    • Category R: Combined resistance (acid, oil, ozone)
    • Category C: Extremely low temperature resistance
    • Category F: Leakage current resistance (long gloves only)

• Physical and Mechanical Requirements The standard defines requirements for:

  • Material composition (elastomer type, lined or unlined)
  • Dimensions (length, palm circumference, thickness)
  • Workmanship (free from harmful physical irregularities)
  • Finish, marking, and packaging

• Testing and Inspection Various tests are mandated, including:

  • Visual and dimensional inspections
  • Mechanical testing (tensile strength, puncture resistance, tension set)
  • Dielectric tests to ensure electrical insulation performance
  • Special tests for properties like oil, acid, ozone, extremely low temperature, and leakage current resistance
  • Ageing and thermal resistance tests

• Conformity and Defect Classification The document integrates updated defect evaluation and conformity assessment procedures, referencing IEC 61318 and introducing new annexes for defect classification and rationale.

Applications

IEC 60903:2014 is key for organizations and professionals involved in live electrical work. Its requirements are integral to ensuring safety in sectors such as:

• Power distribution and transmission
• Electrical maintenance and servicing
• Utility and industrial plant operation
• Electrical installation and troubleshooting

By following the rigorous guidelines and testing procedures outlined in IEC 60903, manufacturers assure the quality and safety of electrical insulating gloves. Employers and safety managers can select gloves based on class and special properties, aligning personal protective equipment (PPE) choices with environmental risks such as exposure to chemicals, oils, extreme cold, or ozone.

For optimal protection, the use of leather protector gloves in conjunction with standard insulating gloves is recommended, except when composite gloves are used, which provide combined protection.

Related Standards

For comprehensive PPE selection and workplace compliance, consider these related standards:

• IEC 61318 - Conformity assessment for tools and equipment for live working
• IEC 61477 - Requirements for the use of live working equipment
• ISO 1817 - Rubber testing for oil resistance
• IEC 60060-1/-2 - High-voltage test techniques
• IEC 60212 - Standard conditions for insulating material testing
• IEC 60417 - Graphical symbols for equipment

Adherence to IEC 60903:2014 not only supports regulatory compliance, but also promotes safety culture, risk reduction, and operational continuity in electrically hazardous environments. For the most up-to-date guidance, always refer to the latest edition of all referenced standards.